condition mean min max ZT0-3 0.2777432005 0.235701598 0.319784803 ZT4-7 0.6168534965000001 0.2933099345 0.9403970585000001 ZT8-11 10.24760617575 4.0247186535 16.470493698000002 ZT12-15 22.179771905000003 21.13566474 23.223879070000002 ZT16-19 8.11814674725 6.3358700245 9.90042347 ZT20-23 3.1890319404999996 2.7863293684999997 3.5917345124999995